dwarf_loader: DW_TAG_subroutine_type may have a DW_AT_byte_size
First seen in Go, where DW_TAG_member don't come with a DW_AT_byte_size,
so we need to figure it out from its type using tag__byte_size() in
class_member__cache_byte_size() so either use the DW_AT_byte size that
comes in DW_TAG_subroutine_type or the cu->addr_size to use the pointer
size.
With this we manage to pretty print this Go class:
$ pahole -C runtime._type ../prometheus-uprobes/main
struct runtime._type {
uintptr size; /* 0 8 */
uintptr ptrdata; /* 8 8 */
uint32 hash; /* 16 4 */
runtime.tflag tflag; /* 20 1 */
uint8 align; /* 21 1 */
uint8 fieldAlign; /* 22 1 */
uint8 kind; /* 23 1 */
func(unsafe.Pointer, unsafe.Pointer) bool equal; /* 24 8 */
uint8 * gcdata; /* 32 8 */
runtime.nameOff str; /* 40 4 */
runtime.typeOff ptrToThis; /* 44 4 */
/* size: 48, cachelines: 1, members: 11 */
/* last cacheline: 48 bytes */
};
At some point we should select how to pretty print this, with a Go
formatter and the above C one :-)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 files changed
